/* Utility and Unix shadow routines for XEmacs on Windows NT. Copyright (C) 1994, 1995 Free Software Foundation, Inc. This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Geoff Voelker (voelker@cs.washington.edu) 7-29-94 */ /* Adapted for XEmacs by David Hobley */ /* Sync'ed with Emacs 19.34.6 by Marc Paquette */ /* Adapted to fpTeX 0.4 by Fabrice Popineau */ #include /* Normalize filename by converting all path separators to the specified separator. Also conditionally convert upper case path name components to lower case. Returns the index of the first meaningful char in the path past any drive specifier of unc name specifier. Remove any multiple path separators after a leading drive specifier or double path separator. */ int normalize_filename (char *fp, char path_sep) { char *p; int ret, i; if (fp == NULL || *fp == '\0') return 0; /* Always lower-case drive letters a-z, even if the filesystem preserves case in filenames. This is so filenames can be compared by string comparison functions that are case-sensitive. Even case-preserving filesystems do not distinguish case in drive letters. */ if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') { *fp += 'a' - 'A'; } /* Remove unneeded double slashes */ ret = (IS_UNC_NAME(fp) ? 2 : NAME_BEGINS_WITH_DEVICE(fp) ? (IS_DIR_SEP(*(fp+2)) ? 3 : 2) : IS_DIR_SEP(*fp) ? 1 : 0); for (i = ret, p = fp+i; IS_DIR_SEP(*p); i++, p++); if (i > ret) { int len = strlen(fp+i); /* remove unneeded slashes, for the sake of win95 */ #if 0 fprintf(stderr, "moving %s to %s\n", fp+ret, fp+i); #endif memcpy(fp+ret, fp+i, len); *(char *)(fp+ret+len) = '\0'; } /* conditionnally rewrite to same path_sep, slash preferably */ if (path_sep) { for (p = fp; *p; p++) if (IS_DIR_SEP(*p)) *p = path_sep; } #if 0 fprintf(stderr, "normalize_filename returned (%d) %s\n", ret, fp); #endif return ret; } /* Destructively turn backslashes into slashes. */ void dostounix_filename (char *p) { normalize_filename (p, '/'); } /* Destructively turn slashes into backslashes. */ void unixtodos_filename (char *p) { normalize_filename (p, '\\'); } /* Quote file name. */ char * quote_filename(char *name) { int len = strlen(name); char *quoted_name; if (strchr(name, ' ') && *name != '"') { quoted_name = xmalloc(len+3); memcpy(quoted_name+1, name, len); *quoted_name = '"'; *(quoted_name+len+1) = '"'; *(quoted_name+len+2) = '\0'; } else { quoted_name = xstrdup(name); } return quoted_name; } /* Unquote file name */ char * unquote_filename(char *name) { int len = strlen(name); if (*name == '"' && *(name + len - 1) == '"') { memmove(name, name+1, len-2); *(name + len - 2) = '\0'; } return name; } /* Remove all CR's that are followed by a LF. (From msdos.c...probably should figure out a way to share it, although this code isn't going to ever change.) */ int crlf_to_lf (int n, unsigned char *buf, unsigned *lf_count) { unsigned char *np = buf; unsigned char *startp = buf; unsigned char *endp = buf + n; if (n == 0) return n; while (buf < endp - 1) { if (*buf == 0x0a) (*lf_count)++; if (*buf == 0x0d) { if (*(++buf) != 0x0a) *np++ = 0x0d; } else *np++ = *buf++; } if (buf < endp) { if (*buf == 0x0a) (*lf_count)++; *np++ = *buf++; } return np - startp; } /* Parse the root part of file name, if present. Return length and optionally store pointer to char after root. */ int _parse_root (char * name, char ** pPath) { char * start = name; if (name == NULL) return 0; /* find the root name of the volume if given */ if (isalpha (name[0]) && name[1] == ':') { /* skip past drive specifier */ name += 2; if (IS_DIR_SEP (name[0])) name++; } else if (IS_DIR_SEP (name[0]) && IS_DIR_SEP (name[1])) { int slashes = 2; name += 2; do { if (IS_DIR_SEP (*name) && --slashes == 0) break; name++; } while ( *name ); if (IS_DIR_SEP (name[0])) name++; } if (pPath) *pPath = name; return name - start; } /* Get long base name for name; name is assumed to be absolute. */ static int get_long_basename (char * name, char * buf, int size) { WIN32_FIND_DATA find_data; HANDLE dir_handle; int len = 0; #ifdef PIGSFLY char *p; /* If the last component of NAME has a wildcard character, return it as the basename. */ p = name + strlen (name); while (*p != '\\' && *p != ':' && p > name) p--; if (p > name) p++; if (strchr (p, '*') || strchr (p, '?')) { if ((len = strlen (p)) < size) memcpy (buf, p, len + 1); else len = 0; return len; } #endif dir_handle = FindFirstFile (name, &find_data); if (dir_handle != INVALID_HANDLE_VALUE) { if ((len = strlen (find_data.cFileName)) < size) memcpy (buf, find_data.cFileName, len + 1); else len = 0; FindClose (dir_handle); } return len; } /* Get long name for file, if possible (assumed to be absolute). */ BOOL win32_get_long_filename (char * name, char * buf, int size) { char * o = buf; char * p; char * q; char full[ MAX_PATH ]; int len; len = strlen (name); if (len >= MAX_PATH) return FALSE; /* Use local copy for destructive modification. */ memcpy (full, name, len+1); unixtodos_filename (full); /* Copy root part verbatim. */ len = _parse_root (full, &p); memcpy (o, full, len); o += len; size -= len; do { q = p; p = strchr (q, '\\'); if (p) *p = '\0'; len = get_long_basename (full, o, size); if (len > 0) { o += len; size -= len; if (p != NULL) { *p++ = '\\'; if (size < 2) return FALSE; *o++ = '\\'; size--; *o = '\0'; } } else return FALSE; } while (p != NULL && *p); return TRUE; } /* Map filename to a legal 8.3 name if necessary. */ const char * map_win32_filename (const char * name, const char ** pPath) { static char shortname[MAX_PATH]; char * str = shortname; char c; const char * path; const char * save_name = name; if (is_fat_volume (name, &path)) /* truncate to 8.3 */ { register int left = 8; /* maximum number of chars in part */ register int extn = 0; /* extension added? */ register int dots = 2; /* maximum number of dots allowed */ while (name < path) *str++ = *name++; /* skip past UNC header */ while ((c = *name++)) { switch ( c ) { case '\\': case '/': *str++ = '\\'; extn = 0; /* reset extension flags */ dots = 2; /* max 2 dots */ left = 8; /* max length 8 for main part */ break; case ':': *str++ = ':'; extn = 0; /* reset extension flags */ dots = 2; /* max 2 dots */ left = 8; /* max length 8 for main part */ break; case '.': if ( dots ) { /* Convert path components of the form .xxx to _xxx, but leave . and .. as they are. This allows .emacs to be read as _emacs, for example. */ if (! *name || *name == '.' || IS_DIR_SEP (*name)) { *str++ = '.'; dots--; } else { *str++ = '_'; left--; dots = 0; } } else if ( !extn ) { *str++ = '.'; extn = 1; /* we've got an extension */ left = 3; /* 3 chars in extension */ } else { /* any embedded dots after the first are converted to _ */ *str++ = '_'; } break; case '~': case '#': /* don't lose these, they're important */ if ( ! left ) str[-1] = c; /* replace last character of part */ /* FALLTHRU */ default: if ( left ) { *str++ = tolower (c); /* map to lower case (looks nicer) */ left--; dots = 0; /* started a path component */ } break; } } *str = '\0'; } else { strcpy (shortname, name); unixtodos_filename (shortname); } if (pPath) *pPath = shortname + (path - save_name); return shortname; }